LED & USB foot sharpener: Get a USB & LED foot sharpener. 3 colours: Choose from either pink, gold, or blue. LED digital display: This shows which speed mode you're using. Non-allergenic: Uses two different non-allergenic natural quartz grinding heads. USB charging: Recharge power with a USB port. Exfoliate: Safely exfoliate dead skin and remove calluses. Waterproof: Designed to be waterproof, you can soak it, and rinse it. Led & Usb Foot Sharpener | Blue | Living Social